Electric regulator.



s. Y. GULLEY;

ELECTRIC REGULATOR. --APPLIOATIORHLED DEC. 23, 1910.

1,003,882.- Paterited Sefih 19,191

N VEN TOR UNITED STATES PATENT FFICE.

STUART Y. CULLEY, 0F COVINGTON, KENTUCKY.

ELECTRIC KEGULATOR.

Specification of Letters Patent. Paten ted Sept. 19, 1911.

Application filed December 23 1910. Serial No. 599,025.

ployed for introducing and cutting out elec-' trical resistances.

The objects of my invention are to secure the conditions of the greatestnumber of contact fingers giving the maximum surface to the core E. Thebox G has a base which contact with the mercury; to cause the mercury torise and sink with the least amount of mechanism; to, have the weight ofthe mercury moved, always the same; and to do away with dash pots bycausing the mercury and its containers to act in this capacity.

Other objects and, advantages are apparent fromthe following descriptionand rawmgs.

The single figiire of the drawing is an' elevation in section, thecomplete device as far as my invention'is concerned.

The organization comprising my invention. consists ofa reservoir A,containing mercury B, and movable both up and down, a stationary box Cwithin said reservoir and provided with a hole through its base, for

i the admission of mercury from said reservoir, a series of contactfingers K, each' reaching farther and farther 111130 the mer cury, andheld fixed to said box, a solenoid D under the reservoir, a core E forsaid solenoid, a rod F connecting said core to said reservoir, astationary guide G, through which said rod passes, a swinging center, H,41 lever I, supported by said center, a

weight J on one end of said lever, the other end being pivoted to saidrod. Resistances L connect together the upper ends of the i and down,

fingers K. The box C is indicated as being stationary by being heldmeans of the bracket N.

on the wall 0, by

The operation is simply that the pulling A down of the reservoir causesthe mercury to sink lower and lower relatively to the contact fifigersK, thereby leaving some of the fingers K free from the mercury, some ofthus introduced into the main line M,-for regulating purposes accordingto well known principles.

. The displacement of the solid portion of the boxC causes the mercuryto rise and fall with a minimum amount of mot-ion of slopes to the lowerends of the contact fingers K, so that only a small space exists for themercury.

Although the mercury runs in and out of the box 0, yet' the weight ofthe mercury to be raised by the solenold is constant.

The reservoir A, box C, and mercury also act as a dash pot, thus savingthe cost and complication due to an extra dash pot.

. I claim as my invention m An electric regulator consisting of a reservoir containing mercury and movable up a stationary box immersed in saidmercury, and having a hole through the base for admitting by saidresistances, dipping successively farther and farther into said mercuryinsaid box, and supported by said box, a stationary solenoid, a movablecore therefor, fixed to said reservoir, and a counterbalance for theweight of said core, reservoir and mercury.

STUART Y. OULLEY.

' Witnesses:

B. E. Woons, H. F. MpDoNALD.

A by the solenoid D,

and releasing mercury, reslstances, a serles of contact fingersconnected successively at their upper ends the resistances L beingv

